Oscillating valve for internal-combustion engines



July 10, 1923.

R. A. BRADLEY OSCILLATING VALVE FOR INTERNAL COMBUSTION ENGINES Filed Dec. 17, 1919 2 Sheets-Sheet 1 flaw; A Bradley July 10, 1923.

R. A. BRADLEY OCILLATING VALVE FOR INTERNAL COMBUSTION ENGINES Filed Dec. 17, 1919 2 Sheets-Sheet 2 nmwtoz Ralph ALBradZg Patented July 10, 1923.

RALPH a. 3mm,

OF OTTAWA, 8A8.

OSCILLATING VALVE FOB INT EBNAL-COMBUSTION ENGINES.

Application filed December 17, 1919. Serial 1W0. 845,678.

To all'wlzom it may concern:

I Be it known that I, RALPH A. BRADLEY,

a citizen of the United States, residi at Ottawa, in the county of Franklin and tate of Kansas, have invented certain new and useful Improvements in Oscillating Valves for Internal-Combustion Engines, of which the following is a specification.

This invention relates to valves and particularl to improved .oscillating valves for internal combustion engines.

The primary objects of the invention is to provide an oscillating valve in the cylinder head of each cylinder properly connected with the shaft of the motor to be operated at certain intervals to properly control the intake and exhaust of the cylinder.

Another object of the invention is to provide a valve which will eliminate the use of duplicate valve members for the intake and exhaust ports and which will be properly geared to the motor shaft so that the intake and exhaust will be properly timed.

The invention further aims to provide a valve which may be mounted in the cylinder head in a manner that will permit kerosene gas to be used in the motor.

The following description and accompanying drawings illustrate one embodiment of the invention in which;

Fig. 1 is a vertical section of the motor showing the valve applied thereto.

Fig. 2 is a cross section on the line 2-2 of Fig. 1.

Fig. 3 is a fragmentary top plan. view.

Figures 4, 5 and 6 are diagrammatic views illustrating the various positions of the valve during operation of the motor.

Fig. 7 is a detailed view of the valve disc.

The cylinder 1 of the motor is mounted upon the crank case 2 in which the crank shaft 3 is mounted. The connecting rod 4 joined to the crank shaft is connected to the piston 5 operating in the cylinder. A cylinder head 6 is mounted upon the cylinder and is circular as shown in Fig. 2 and is held in position by suitable fastening elements 7. Water spaces 8 are provided in the cylinder head at the outer portions thereof and the center is recessed to provide an intake passage way 9. The wall 10 divides the intake passage way from the exhaust passage way 11 which extends completely around the intake passage way and has an outlet through the port 12. The lower end of the intake passage way 9, formed by the bottom wall 13, is provided with a valve seat 14 upon which is normally seated a valve dlsc 15 of tapered formation.

Certain ports 16 communicate with the valve seat from the exhaust passage way 11' while certain other ports 17 open in the valve seat and communicate with the intake passage way 9. The valve 15, as shown 1n Fig. 7, is provided with the three ports 18 which at certain intervals are inregistration with either the ports 16 or the ports 17 whereby communication is established between the interior of the cylinder and either the intake pasage way or the exhaust passage way.

The valve disc 15 is attached to a vertical I stem 20 the upper end of which is connected to a lever arm 21 projectingla'terally and of suitable length. by a ball and socket joint 23 to one end of the arm'21' and the opposite end of the rod 22 is connected by a ball and socket joint 24 to one end of a valve crank lever 25 pivoted on brackets 26. The shorter arm $0 of the lever 25 pro'ects to one side of the cylinder head and as fastened thereto in any suitable manner an operating rod 27.

The crank shaft 3 is provided with a pinion-28 meshing with a gear wheel 29 on a cam shaft 30 whereby the cam shaft may be actuated when the crank shaft is in operation. A cam 31 ismounted on the cam shaft and is provided with an irregular cam surface to engage a wheel 32 on the lower no end of the operating rod'27. The wheel is urged into engagement with the cam by an expansion spring 33 interposed between a' collar 34 fixed to the rod and an abutment member 35. As the cam is rotated the op- 96 crating rod is reciprocated whereby the valve disc 15 will be oscillated through the connection established by the different levers. Obviously the cam is designed to throw the valve into proper position at the cycle of movement of the piston.

I When the valve is in the position shown in Fig. 4, which illustrates the intake position, the ports 18 in the valve disc are in alignment with the intake ports 17 in the 105 cylinder head thus permitting the gas to be taken into the cylinder. In Fig. 5 is illustrated the position of the different ports during-the compression and power strokes of the engine. It will be observed that in no this instance all of the ports are out of alignment. In- Fig. 6 the valve disc has A rod 22 is connected proper 100 been further moved so that the ports 18 are in registration with the ports 16 permitting the exhaust gases to pass out therethrough thereby completing the four cycles of the motor.

Inasmuch as the exhaust passage way entirely surrounds the intake passage way 9 it will he obvious that the hot gases passing through the exhaust passage way will cause the contents of the intake passage way to be thoroughly heated. This arrangement', therefore, will act as a vaporizer for employing kerosene gas in the operation of the motor.

A small duct extends from the water space 8t0 the valve seat to prevent sticking of the valve and to prevent the collection oi carbon on the valve seat. This duct is indicated at 3%.

What l claim isz Aninternal combustion engine having a detachable head provided with an intake passage way, and having an exhaust passage We in the cylinder head surrounding the inta e passage way, a wall intermediate the passage ways, said wall forming a valve seat, said wall having ports communicating with the intake and exhaust passage ways, a valve for said seat having ports to register with saidports, a stem on said valve extending through the intake nassar e way, an intake pipe on the head and 1n which said stem is journaled, a crank above said pipe extending from the stem and adapted for unitary movement therewith a stud on the cylinder head, a bell-crank lever pivoted to said stud, a link connecting the crank and hell-crank and means for separable connection of said bell-crank to a push rod.

In testimony WhGIEOf ll afiix any signature.

RALPH BRADL 

